An amplifier increases the power of the signal being fed to it by taking energy from its power supply and matching the signal but increasing its amplitude. Amplifiers use many different methods for converting these electrical signals and have been categorized into classes.

Class A/B: Greater than 50% of the input signal is amplified while the other percentage is “off”. These amplifiers have a small amount of current flowing through the output transistors all the time which almost eliminates crossover distortion. Class A/B has great sound quality but is not as efficient as class D. These amps are most commonly used to drive speakers.

Class D: Also known as switching amplifiers, class D amps have output transistors that are completely turned “on” or “off”. This means that when the transistors are on, there is almost no voltage across them but when they are off there is significant voltage but no current flowing through it which makes these amplifiers very efficient at the cost of sound quality. These amps are most commonly used to drive subwoofers.

Other Classes: You may see classes such as GH, bD, X, FD, etc. by some manufactures. These amplifiers tend to be either class A/B, D or a hybrid of the two but with improvements to their designs that can make them more efficient or offer better sound quality.

Number of Channels

Each channel on an amplifier will power one speaker using a positive and negative cable. There are various types of amplifiers, each designed to power a certain number of speakers. Monoblock amplifiers, also known as single channel, are designed to power one or more subwoofers. These amplifiers often have very high power ratings. On the other hand, multi-channel amplifiers power multiple speakers, usually at lower power ratings. 2-Channel and 4-Channel amplifiers can power car speakers or low powered subwoofers. Occasionally you might see a 5 or 6-channel amplifier that can power speakers and subwoofers at the same time. The most common setup is a monoblock amp to run subwoofers and a 4-channel amp to run door speakers. Check out our Knowledge Base for more information.

Total RMS Power Output

Total RMS power is measured by multiplying RMS power per channel by the number of channels, and is calculated at the lowest level of operating impedance.

RMS power is the amount of continuous power, measured in watts, that an amplifier produces is called RMS power. The higher the RMS figure, the louder and cleaner your music sounds.

The RMS output figure is much more accurate than the peak rating when comparing products.

Up to 249.99 watts (22)

250–499.99 watts (83)

500–999.99 watts (139)

1,000–1,499.99 watts (61)

1,500 watts or more (66)

Total Peak Power Output

The total peak power output is measured as the wattage per channel multiplied by the number of channels, and is calculated at the lowest level of operating impedance.

It is measured during a brief musical burst, such as a sudden drum accent. Some manufacturers display peak power ratings on the face of their products to increase the appeal.

The RMS power rating is more accurate, and we recommend using it for product comparison.

Up to 499.99 watts (21)

500–999.99 watts (41)

1,000–1,999.99 watts (76)

2,000–2,999.99 watts (42)

3,000 watts or more (32)

Minimum Impedance Unbridged

The lowest impedance the amplifier will handle when it is not bridged.

Minimum Impedance Bridged

The lowest impedance the amplifier will handle when it is bridged.

Remote bass/level controller

If the amp comes with a bass/gain remote you will be able to control the level of your bass from your dashboard. Typically bass remotes also include a 16-20 ft. wire for installation.

Yes (201)

No (125)

Optional (83)

Preamp Outputs

Many amplifiers are equipped with RCA preamp outputs which pass the original music signal from the source to additional amplifiers. This is known as daisy chaining because the source connects to the first amp, and the first amp connects to the second amp, etc. The advantage to daisy chaining is you only need one 2-channel RCA cable to transfer the signal from the head-unit to the amplifier, and then one additional cable for each amp being daisy chained.

Built-in Crossover

A crossover is a type of filtering system that permits only certain frequencies to play. A Low-Pass (LP) crossover allows only frequencies below its setting to get through which is good in the case of some subwoofers. A High-Pass(HP) filter allows frequencies above its setting to pass through, this is normally used on speakers.

When a crossover is set to FULL it means no filtering is added and the full frequency spectrum is allowed through the amplifier. Filtering is important because feeding a speaker frequencies it cannot reproduce effectively creates distortion.

Speaker Level Inputs

Speaker level inputs are commonly referred to as high-level inputs and vice versa. This input type allows you to get your audio signal directly from the speaker wire in your vehicle, instead of using RCA cables. The advantage of this is factory integration, as most stock radios do not have RCA outputs to run amplifiers.

Yes (225)

No (75)

Optional (71)

Yes - with included adapter (20)

Maximum Input Gauge Size

This is the largest gauge wire that will fit into the power and ground terminals of this device. The lower the gauge number, the thicker the wire is. For example, a 4 gauge wire is thicker than an 8 gauge wire and thus has higher current carrying capacity. Always do your best to get this size wire to reduce the risk of damage to your components.

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Cerwin Vega SRPM700.2D with NVX 8 Gauge Amp Kit

700W RMS Stroker RPM Series Class-D 2-Channel Marine Amplifier with Bass Remote

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Cerwin Vega SRPM700.2D with NVX 8 Gauge Amp Kit

700W RMS Stroker RPM Series Class-D 2-Channel Marine Amplifier with Bass Remote

• 200 watts x 2 channel @ 4 ohm
• 350 watts x 2 channel @ 2 ohm
• Bridged: 700 watts x 1 channel @ 4 ohm
• Total RMS Power: 700 watts
• Class D 2 ohm Stable 2-Channel Amplifier
• Includes Amplifier Wiring Kit

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Kicker 10" Subwoofer (43TC104) + Amplifier (46CXA4001T) w/ Free Amp Install Kit

300W Peak (150W RMS) Loaded Single 10" Vented Truck Enclosure with 400W RMS Class D Monoblock Amplifier, 8 Gauge Wiring Kit, and Bass Remote + Bundle

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Kicker 10" Subwoofer (43TC104) + Amplifier (46CXA4001T) w/ Free Amp Install Kit

300W Peak (150W RMS) Loaded Single 10" Vented Truck Enclosure with 400W RMS Class D Monoblock Amplifier, 8 Gauge Wiring Kit, and Bass Remote + Bundle

Kicker Comp TC10 300W Peak Loaded Single 10" Vented Truck Enclosure
400W RMS Class D CX-Series Monoblock Car Amplifier
Wired Bass Remote Controller for CX Series Amplifiers
Belva 8 Gauge Premium Copper Clad Aluminum Amplifier Wiring Kit with RCA
NVX Premium Polyurethane Foam Can Insulator Sleeve Koozie

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Kicker Comp TC10 300W Peak Loaded Single 10" Vented Truck Enclosure
400W RMS Class D CX-Series Monoblock Car Amplifier
Wired Bass Remote Controller for CX Series Amplifiers
Belva 8 Gauge Premium Copper Clad Aluminum Amplifier Wiring Kit with RCA
NVX Premium Polyurethane Foam Can Insulator Sleeve Koozie

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Kicker Subwoofer (50TCWC102) + Amplifier (CXA400.1) w/ Free Amp Install Kit

500W Peak (250W RMS) Loaded Single 10" Vented Truck Enclosure with 400W RMS Monoblock Amplifier, 8 Gauge Wiring Kit, Remote and NVX Koozie

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Kicker Subwoofer (50TCWC102) + Amplifier (CXA400.1) w/ Free Amp Install Kit

500W Peak (250W RMS) Loaded Single 10" Vented Truck Enclosure with 400W RMS Monoblock Amplifier, 8 Gauge Wiring Kit, Remote and NVX Koozie

Kicker 500W Peak Loaded Single 10-Inch Vented Truck Enclosure
400W RMS Class D CX-Series Monoblock Car Amplifier
Wired Bass Remote Controller for CX Series Amplifiers
8 Gauge Premium Copper Clad Aluminum Complete 2-Channel Wiring Kit
Premium Polyurethane Foam Can Insulator Sleeve Koozie

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Kicker 500W Peak Loaded Single 10-Inch Vented Truck Enclosure
400W RMS Class D CX-Series Monoblock Car Amplifier
Wired Bass Remote Controller for CX Series Amplifiers
8 Gauge Premium Copper Clad Aluminum Complete 2-Channel Wiring Kit
Premium Polyurethane Foam Can Insulator Sleeve Koozie

Hertz HCP 1MDK with NVX 4 Gauge Amp Kit

2480 Peak Monoblock Class-D Marine Car Audio Amplifier

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Hertz HCP 1MDK with NVX 4 Gauge Amp Kit

2480 Peak Monoblock Class-D Marine Car Audio Amplifier

• 600 watts x 1 channel @ 4 ohm
• 1100 watts x 1 channel @ 2 ohm
• Total RMS Power: 1240 watts
• Corrosion Protection
• Class D 2 ohm Stable Monoblock Amplifier
• Includes Amplifier Wiring Kit

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124

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Wet Sounds SYN-DX 2 + NVX 4 Gauge Marine Amp Kit

750W RMS SYN-DX Series Bridgeable Full Range 2-Channel Class D Marine Amplifier (WetSounds)

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Wet Sounds SYN-DX 2 + NVX 4 Gauge Marine Amp Kit

750W RMS SYN-DX Series Bridgeable Full Range 2-Channel Class D Marine Amplifier (WetSounds)

• 200 watts x 2 chan. @ 4 Ohm
• 375 watts x 2 chan. @ 2 Ohm
• 750 watts x 1 chan. @ 4 Ohm
• Total power output: 750 watts RMS
• Variable low-pass filter: 50 - 250 Hz, 12 dB/octave
• Variable high-pass filter: 50 - 250 Hz, 12 dB/octave
• Fuse Rating: 30 A x 3

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Infinity DSP4425 (INFDSP4425AM) with NVX 8 Gauge Amp Kit

200W Peak (140W RMS) DSP Series Class-AB 4-Channel Amplifier with Digital Signal Processing

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Infinity DSP4425 (INFDSP4425AM) with NVX 8 Gauge Amp Kit

200W Peak (140W RMS) DSP Series Class-AB 4-Channel Amplifier with Digital Signal Processing

• 25 watts x 4 channel @ 4 ohm
• 35 watts x 2 channel @ 2 ohm
• Total RMS Power: 140 watts
• Class A/B 2 ohm Stable 4-Channel Amplifier
• Includes Amplifier Wiring Kit

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• 25 watts x 4 channel @ 4 ohm
• 35 watts x 2 channel @ 2 ohm
• Total RMS Power: 140 watts
• Class A/B 2 ohm Stable 4-Channel Amplifier
• Includes Amplifier Wiring Kit

MTX WET75.4 + Belva BAK44

400W Wet Series 4-Channel All Weather Class A/B Marine/Powersports Compact Amplifier + Belva 4 Gauge Amp Wiring kit

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MTX WET75.4 + Belva BAK44

400W Wet Series 4-Channel All Weather Class A/B Marine/Powersports Compact Amplifier + Belva 4 Gauge Amp Wiring kit

• RMS Power: 75W x 4 @ 4 ohm, 100W x 4 @ 2 ohm
• Total Peak Power: 400W
• Plastic Cover Over Control-Adjustments
• Dimensions: 12.15"W x 6.40"L x 2.25"H

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• RMS Power: 75W x 4 @ 4 ohm, 100W x 4 @ 2 ohm
• Total Peak Power: 400W
• Plastic Cover Over Control-Adjustments
• Dimensions: 12.15"W x 6.40"L x 2.25"H

JBL Club A754 with NVX 8 Gauge Amp Kit

400W RMS Club Series Class-H Compact 4-Channel Amplifier

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JBL Club A754 with NVX 8 Gauge Amp Kit

400W RMS Club Series Class-H Compact 4-Channel Amplifier

• 75 watts x 4 channel @ 4 ohm
• 100 watts x 4 channel @ 2 ohm
• Bridged: 200 watts x 2 channel @ 4 ohm
• Total RMS Power: 400 watts
• Class H 2 ohm Stable 4-Channel Amplifier
• Includes Amplifier Wiring Kit

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JBL Club A600 with NVX 8 Gauge Amp Kit

600W RMS Club Series Class-D Compact Monoblock Amplifier with Bass Remote

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JBL Club A600 with NVX 8 Gauge Amp Kit

600W RMS Club Series Class-D Compact Monoblock Amplifier with Bass Remote

• 350 watts x 1 channel @ 4 ohm
• 600 watts x 1 channel @ 2 ohm
• Total RMS Power: 600 watts
• Class D 2 ohm Stable Monoblock Amplifier
• Includes Amplifier Wiring Kit

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• 350 watts x 1 channel @ 4 ohm
• 600 watts x 1 channel @ 2 ohm
• Total RMS Power: 600 watts
• Class D 2 ohm Stable Monoblock Amplifier
• Includes Amplifier Wiring Kit

Cerwin-Vega H800.4D with NVX 4 Gauge Amp Kit

400W Full Range Class D 4 Channel Digital Amplifier

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Cerwin-Vega H800.4D with NVX 4 Gauge Amp Kit

400W Full Range Class D 4 Channel Digital Amplifier

• 125 watts x 4 channel Watts RMS x 1 @ 4 ohm
• 200 watts x 4 channel Watts RMS x 1 @ 2 ohm
• Bridged: 400 watts x 2 channel @ 4 ohm
• Total RMS Power: 1600 watts Watts
• Multi-Turn On Modes: REM/DC/VOX
• Includes Amplifier Wiring Kit

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List price $587.98

-39% $359.99

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Kenwood eXcelon XM302-4 with NVX 4 Gauge Amp Kit

300W RMS XR Series Class-D 4-Channel Marine Amplifier

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Kenwood eXcelon XM302-4 with NVX 4 Gauge Amp Kit

300W RMS XR Series Class-D 4-Channel Marine Amplifier

• 50 watts x 4 channel @ 4 ohm
• 75 watts x 4 channel @ 2 ohm
• Bridged: 150 watts x 2 channel @ 4 ohm
• Total RMS Power: 300 watts
• Class D 2 ohm Stable 4-Channel Amplifier
• Includes Amplifier Wiring Kit

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List price $605.99

-37% $383.17

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Alpine HDA-F60 with NVX 4 Gauge Amp Kit

600W RMS Status Series Class-D 4-Channel Car Amplifier

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Alpine HDA-F60 with NVX 4 Gauge Amp Kit

600W RMS Status Series Class-D 4-Channel Car Amplifier

• 100 watts RMS x 4 at 4 ohm
• 150 watts RMS x 4 at 2 ohm
• 300 watts RMS x 2 bridged at 4 ohm
• Bridged: @ 4 ohm
• Total RMS Power: 150 watts
• Class D 2 ohm Stable 4-Channel-Channel Amplifier
• Includes Amplifier Wiring Kit

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List price $1355.99

-26% $999.95

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MTX Audio MUD100.4with NVX 8 Gauge Amp Kit

400W Peak (200W RMS) Mud Series Class-D 4-Channel Compact Marine Amplifier for Outdoor Powersports

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MTX Audio MUD100.4with NVX 8 Gauge Amp Kit

400W Peak (200W RMS) Mud Series Class-D 4-Channel Compact Marine Amplifier for Outdoor Powersports

• 50 Watts RMS x 4 @ 4 ohm
• 100 Watts RMS x 4 @ 2 ohm
• Total Peak Power: 800 Watts
• Selectable Front high-pass filter: 80 / 200 Hz
• Speaker-level (high-level) inputs
• Includes Amplifier Wiring Kit

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Rockford Fosgate PBR400X4D with NVX 8 Gauge Amp Kit

400W RMS Punch Series Class-D 4-Channel Amplifier

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Rockford Fosgate PBR400X4D with NVX 8 Gauge Amp Kit

400W RMS Punch Series Class-D 4-Channel Amplifier

• 50 watts x 4 channel @ 4 ohm
• 100 watts x 4 channel @ 2 ohm
• Bridged: 200 watts x 2 channel @ 4 ohm
• Total RMS Power: 400 watts
• Class D 2 ohm Stable 4-Channel Amplifier
• Includes Amplifier Wiring Kit

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List price $417.98

-19% $339.98

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NVX VAD10004 v2 Amp, XFLOC4 Line Output Converter and XKIT44 4 Gauge Amp Kit

1000W RMS Full Range Class D 4-Channel Amplifier with 4-Channel Line Output Converter and 4 Gauge 100% OFC Wiring Kit + Accessories

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NVX VAD10004 v2 Amp, XFLOC4 Line Output Converter and XKIT44 4 Gauge Amp Kit

1000W RMS Full Range Class D 4-Channel Amplifier with 4-Channel Line Output Converter and 4 Gauge 100% OFC Wiring Kit + Accessories

NVX 1000W RMS Full Range Class D 4-Channel Car and Marine Amplifier
4-Channel 160W Adjustable Line Output Converter with Remote Turn On
Full Spec 4 Gauge 100% OFC Oxygen Free Copper Amplifier Wiring Kit
Complete bundle includes premium RCA cables for amplifiers up to 1500 Watts
Versatile high-power solution for car, marine, and powersports audio systems

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135

List price $515.72

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NVX 1000W RMS Full Range Class D 4-Channel Car and Marine Amplifier
4-Channel 160W Adjustable Line Output Converter with Remote Turn On
Full Spec 4 Gauge 100% OFC Oxygen Free Copper Amplifier Wiring Kit
Complete bundle includes premium RCA cables for amplifiers up to 1500 Watts
Versatile high-power solution for car, marine, and powersports audio systems

Diamond Audio HX600.4 with NVX 8 Gauge Amp Kit

1000W RMS HEX Series 4-Channel Class-D Amplifier

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Diamond Audio HX600.4 with NVX 8 Gauge Amp Kit

1000W RMS HEX Series 4-Channel Class-D Amplifier

• 160 watts x 4 channel @ 4 ohm
• 250 watts x 4 channel @ 2 ohm
• Bridged: 500 watts x 2 channel @ 4 ohm
• Total RMS Power: 600 watts
• Class D 2 ohm Stable 4-Channel Amplifier
• Includes Amplifier Wiring Kit

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List price $957.98

-16% $799.99

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Diamond Audio MICRO1V2 with NVX 8 Gauge Amp Kit

500W RMS Micro Series Class-D Monoblock Amplifier

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Diamond Audio MICRO1V2 with NVX 8 Gauge Amp Kit

500W RMS Micro Series Class-D Monoblock Amplifier

• 175 watts x 1 channel @ 4 ohm
• 300 watts x 1 channel @ 2 ohm
• Total RMS Power: 500 watts
• Class D 2 ohm Stable Monoblock Amplifier
• Includes Amplifier Wiring Kit

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List price $565.98

-29% $399.99

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• 175 watts x 1 channel @ 4 ohm
• 300 watts x 1 channel @ 2 ohm
• Total RMS Power: 500 watts
• Class D 2 ohm Stable Monoblock Amplifier
• Includes Amplifier Wiring Kit

Sound Extreme by ECOXGEAR SEI-AMPEV30041 with NVX 8 Gauge Amp Kit

300W RMS EV Series Class-D 4-Channel Amplifier

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Sound Extreme by ECOXGEAR SEI-AMPEV30041 with NVX 8 Gauge Amp Kit

300W RMS EV Series Class-D 4-Channel Amplifier

• 74 watts x 4 channel @ 4 ohm
• Bridged: 150 watts x 2 channel @ 2 ohm
• Total RMS Power: 300 watts
• Class D 4 ohm Stable 4-Channel-Channel Amplifier
• Includes Amplifier Wiring Kit

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List price $507.98

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• 74 watts x 4 channel @ 4 ohm
• Bridged: 150 watts x 2 channel @ 2 ohm
• Total RMS Power: 300 watts
• Class D 4 ohm Stable 4-Channel-Channel Amplifier
• Includes Amplifier Wiring Kit

Sound Extreme by ECOXGEAR SEI-AMP30041 with NVX 8 Gauge Amp Kit

300W RMS Class-D 4-Channel High Definition Marine Amplifier

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Sound Extreme by ECOXGEAR SEI-AMP30041 with NVX 8 Gauge Amp Kit

300W RMS Class-D 4-Channel High Definition Marine Amplifier

• 75 watts x 4 channel @ 4 ohm
• Bridged: 150 watts x 2 channel @ 2 ohm
• Total RMS Power: 300 watts
• Class D 4 ohm Stable 4-Channel Amplifier
• Includes Amplifier Wiring Kit

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• 75 watts x 4 channel @ 4 ohm
• Bridged: 150 watts x 2 channel @ 2 ohm
• Total RMS Power: 300 watts
• Class D 4 ohm Stable 4-Channel Amplifier
• Includes Amplifier Wiring Kit

Sound Extreme by ECOXGEAR SEI-AMPEV30011 with NVX 8 Gauge Amp Kit

300W RMS EV Series Class-D Monoblock High Definition Marine Amplifier

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Sound Extreme by ECOXGEAR SEI-AMPEV30011 with NVX 8 Gauge Amp Kit

300W RMS EV Series Class-D Monoblock High Definition Marine Amplifier

• 300 watts x 1 channel @ 4 ohm
• Total RMS Power: 300 watts
• Class D 4 ohm Stable Monoblock Amplifier
• Operating Voltage: 43V to 82V
• Marine-grade sealed die-cast aluminum chassis
• Includes Amplifier Wiring Kit

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List price $395.98

-24% $299.99

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Car Amplifier Packages & Bundles

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Cerwin Vega SRPM700.2D with NVX 8 Gauge Amp Kit

Cerwin Vega SRPM700.2D with NVX 8 Gauge Amp Kit

Kicker 10" Subwoofer (43TC104) + Amplifier (46CXA4001T) w/ Free Amp Install Kit

Kicker 10" Subwoofer (43TC104) + Amplifier (46CXA4001T) w/ Free Amp Install Kit

Kicker Subwoofer (50TCWC102) + Amplifier (CXA400.1) w/ Free Amp Install Kit

Kicker Subwoofer (50TCWC102) + Amplifier (CXA400.1) w/ Free Amp Install Kit

Hertz HCP 1MDK with NVX 4 Gauge Amp Kit

Hertz HCP 1MDK with NVX 4 Gauge Amp Kit

Wet Sounds SYN-DX 2 + NVX 4 Gauge Marine Amp Kit

Wet Sounds SYN-DX 2 + NVX 4 Gauge Marine Amp Kit

Infinity DSP4425 (INFDSP4425AM) with NVX 8 Gauge Amp Kit

Infinity DSP4425 (INFDSP4425AM) with NVX 8 Gauge Amp Kit

MTX WET75.4 + Belva BAK44

MTX WET75.4 + Belva BAK44

JBL Club A754 with NVX 8 Gauge Amp Kit

JBL Club A754 with NVX 8 Gauge Amp Kit

JBL Club A600 with NVX 8 Gauge Amp Kit

JBL Club A600 with NVX 8 Gauge Amp Kit

Cerwin-Vega H800.4D with NVX 4 Gauge Amp Kit

Cerwin-Vega H800.4D with NVX 4 Gauge Amp Kit

Kenwood eXcelon XM302-4 with NVX 4 Gauge Amp Kit

Kenwood eXcelon XM302-4 with NVX 4 Gauge Amp Kit

Alpine HDA-F60 with NVX 4 Gauge Amp Kit

Alpine HDA-F60 with NVX 4 Gauge Amp Kit

MTX Audio MUD100.4with NVX 8 Gauge Amp Kit

MTX Audio MUD100.4with NVX 8 Gauge Amp Kit

Rockford Fosgate PBR400X4D with NVX 8 Gauge Amp Kit

Rockford Fosgate PBR400X4D with NVX 8 Gauge Amp Kit

NVX VAD10004 v2 Amp, XFLOC4 Line Output Converter and XKIT44 4 Gauge Amp Kit

NVX VAD10004 v2 Amp, XFLOC4 Line Output Converter and XKIT44 4 Gauge Amp Kit

Diamond Audio HX600.4 with NVX 8 Gauge Amp Kit

Diamond Audio HX600.4 with NVX 8 Gauge Amp Kit

Diamond Audio MICRO1V2 with NVX 8 Gauge Amp Kit

Diamond Audio MICRO1V2 with NVX 8 Gauge Amp Kit

Sound Extreme by ECOXGEAR SEI-AMPEV30041 with NVX 8 Gauge Amp Kit

Sound Extreme by ECOXGEAR SEI-AMPEV30041 with NVX 8 Gauge Amp Kit

Sound Extreme by ECOXGEAR SEI-AMP30041 with NVX 8 Gauge Amp Kit

Sound Extreme by ECOXGEAR SEI-AMP30041 with NVX 8 Gauge Amp Kit

Sound Extreme by ECOXGEAR SEI-AMPEV30011 with NVX 8 Gauge Amp Kit

Sound Extreme by ECOXGEAR SEI-AMPEV30011 with NVX 8 Gauge Amp Kit

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